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I would like to remove all sites from the list of approved sites for a plugin in Internet Explorer as described here but I would like to do so via Group Policy. Is this possible?

I know I can disable plugins via Group Policy, but I need to leave the plugins enabled and available for users, I just want to force the users to allow the plugin to run if they want to see the content instead of allowing it run by default.

user51279
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This is gross. I used ProcMon to trace the individual change in the registry for Shockwave Flash Player. I saw the following path contained the domain list changes:

HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\{D27CDB6E-AE6D-11CF-96B8-444553540000}\iexplore\AllowedDomains\*

That GUID is for the particular version of Shockwave Flash Player installed on my system. I could not tell if you if that is valid for every flavor of this add-in.

Unless your add-in has it's own Group Policy extensions (ADMX + ADML), I'm not sure how you could go about administratively managing this list reliably.

blaughw
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    Check this out, that key applies to "Shock wave Flash" in general: https://technet.microsoft.com/en-us/library/cc737898(v=ws.10).aspx You could probably use that key as a reliable place for your settings because of this. Though, as with all things GP related, test it thoroughly! Also: beware of tattooing. – austinian Jul 13 '15 at 18:39